Hi Fun in the Sun,
When we were in Cozumel we did the Mayan Ruins tour. I have mixed feelings on it. We enjoyed it because it is just mind-boggling when you hear about the technology of this civilization. We were a little disappointed because all the ruins are roped off and you can only get so close, not close enough to look inside. Take a swimsuit because after the tour you can walk down to the beach area and swim for a bit before the tour group leaves out. We were on Royal Caribbean and we docked at Cozumel, took a ferry to the mainland (about 20 minutes in very choppy waters), then a bus ride for almost an hour into what looked like jungles, with what stop at a gift shop that we later found out was about double the prices that people at our dinner table paid at the market on Cozumel. But, all in all, i'm glad we went.
In Grand Cayman, we wanted to do Stingray City and I will next time. We did the island tour, which was the town of Hell (boring but you can mail yourself and others a postcard and it's postmarked from hell, so that was fun to get in the mail), the sea turtle farm (this was fun because you get to see turtles that are up to 300 lbs and you can hold the baby one's, then we went to the rum cake place and bought gifts for people. We only took this tour because on Cozumel with the ruins tour there is no time to shop, if we had done Stingray City we couldn't shop, but with the Island tour we were free to go off on our own. For pictures of the ruins and grand cayman check our photo gallery on this website under Royal Caribbean Monarch of the Seas or our personal webpage at http://scgalloways.tripod.com
Have a great time!